JPH11351744A - Residual grain remover for shutter drum in circulation grain drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent grains from being left in the shutter drum of a circulation grain drying machine supported at the lower end of grain flow-down passage at the inner drying section when rotation of the shutter drum is stopped. SOLUTION: When rotation of a shutter drum 4 supported at a position facing the lower end of the grain flow-down passage at a drying section while having an opening 41 split in the circumferential wall of a hollow tubular body 40 along the axial direction is stopped upon finishing a grain discharging process, it is turned two revolutions in same direction so that the opening 41 is stopped at a starting position directing upward or downward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain dryer for circulating and drying kernels, which have been stuck in a storage section in a machine body, through a drying section below the storage section and back to the storage section. At the end of the discharge stroke, the shutter drum provided at the lower end of the grain flow path of the drying section so as to feed out the grains toward the lower conveyor for discharging grains provided at the bottom of the machine. In addition, the present invention relates to a shutter drum removing device for removing grains remaining in the drum.

[0002]

2. Description of the Related Art As shown in FIGS. 1 and 2, a circulation type grain dryer A is provided with a grain to be dried on an upper half side of a machine body 1 formed in a vertically high box or tower shape. A storage section a for squeezing and storing is formed, and in the lower half of the fuselage 1, air is guided by a hot wind (dry wind) generated and blown out by the hot wind generator 2 mounted on the front side of the fuselage 1. A drying section b comprising a path 30, a grain flow-down path 31, and an exhaust air path 32 is provided.
At the lower end of 1.31, a shutter drum 4 having a long front and rear slit-shaped opening 41 formed on the peripheral wall of a hollow cylindrical body 40 is arranged and mounted on the airframe 1, and its rotating shaft is The rotation shaft of the motor m is transmitted to the output shaft of the reduction gear g, which is transmitted to the bottom of the body 1 below the shutter drum 4 to receive the grains fed by the rotation of the drum 4 and to the outside of the body 1 The lower conveyor 5 to be carried out is mounted and connected to the bottom of an elevator 6 erected on the front side or the rear side of the body 1 at the end side in the transport direction, and the discharge provided at the top of the elevator 6 An upper conveyor 61 for mounting mounted on the top of the fuselage 1 and a discharge gutter 62 are communicated with the cylinder 60 so as to be switchable, and the operation of each part is assembled in a control panel 7 mounted on the front of the fuselage 1. It is configured to be controlled by the embedded control device.

When the grains to be dried are loaded into the storage section a, the shutter drum 4 is moved by the peripheral wall by the operation of a loading switch provided on the panel of the control panel 7. In a state where the circulating system such as the lower conveyor 5, the elevator 6 and the upper conveyor 61 is operated in a state where the base 31 is stopped at the closed starting position, the insertion port c provided on the side surface of the machine body 1 is opened. Then, the grains are fed into the lower conveyor 5 and poured into the storage unit a.

[0004] When drying the grain, the shutter drum 4 and the circulation system are operated by operating a drying switch provided on the panel of the control panel 7, and the hot air generator 2 and the exhaust fan are operated. In a state in which the operation of the drying unit 8 is performed, the grains are circulated and flown, and the drying air is generated by the hot air generation device 2 so that the drying process proceeds.

When the grains dried to a predetermined moisture value are discharged to the outside of the machine by the end of the drying process, the operation of the hot air generator 2 is stopped by operating a discharge switch provided on the panel of the control panel 7. Then, the shutter drum 4 and the circulating system are set to operate, and the discharge cylinder 60 at the top of the elevator 6 is communicated with the discharge gutter 62 to take out the grains from the discharge gutter 62 to the outside.

When the removal of the grains is completed, the discharge operation is terminated by operating the stop switch sw provided on the panel of the control panel 7 to stop the operation.

At this time, even if the operation of the other operating parts is stopped by turning off the stop switch sw, the shutter drum 4 rotates to the starting position where the slit-shaped opening 41 is correctly positioned below or above, and It is controlled to stop at that position, and when rotating,
When it rotates 360 degrees from the starting position and reaches the starting position, it rotates 360 degrees in the opposite direction, and the control is repeated.

[0008]

The means for driving the shutter drum in the above-mentioned circulating grain dryer has a function of operating the stop switch after the operation of discharging the grain and stopping the rotation of the shutter drum. In this case, a small amount of kernels will definitely remain in the lumen of the shutter drum.

[0009] The remaining kernels are difficult to clean and eliminate, which not only causes inconvenience to be mixed in when the variety of grains to be dried next changes, but also causes This has become a major problem when leaving the dryer till the next season, as rats can enter and build nests, causing the aircraft to become dirty and damaged.

The present invention has been made to solve this problem which has occurred in the conventional circulation type grain dryer, and when the rotation of the shutter drum is stopped, a grain is formed in the lumen of the shutter drum. It is an object of the present invention to provide a new means for preventing the remaining of the grains.

[0011]

According to the present invention, as a means for achieving the above-mentioned object, a crack-shaped opening 41 is formed in the peripheral wall of the hollow cylindrical body 40 along the axial direction to dry the hollow cylindrical body 40. When the rotation of the shutter drum 4 that is driven and rotated by being suspended at a position facing the lower end of the grain flow-down path 31 in the part b is stopped in the same direction when the grain discharge process is completed and the stop switch sw is stopped. 2 turns to open 4
1 to provide a device for removing the residual kernel of the shutter drum in a recirculating type grain dryer in which the cylinder 1 is controlled to stop correctly at a starting position facing downward or upward. Drum 4 which is formed by forming a cleavage opening 41 along the direction and drivingly rotating the shaft at a position facing the lower end of the grain flow passages 31 in the drying section b.
Is controlled so as to stop the rotation at the start position where the opening 41 is correctly directed downward or upward, and is driven to rotate by switching the rotation direction in the forward and reverse directions by two rotations, and two rotations in the same direction when the stop switch is activated. The present invention provides an apparatus for removing residual grains from a shutter drum in a circulation type grain dryer, characterized in that the grains are controlled to stop.

This means of the present invention has been made based on the knowledge obtained by making various studies in order to solve the above-mentioned problems. That is, the shutter drum 4 in the conventional circulation type grain dryer has the opening position as shown in FIG. 3A when the starting position is set to the state where the opening 41 is correctly directed downward. Rotation in one direction to the right or left from the starting position in which 41 is positioned correctly below and blocking the grain flow-down passages 31 by the peripheral wall of the drum, and thereby rotates 360 degrees, and FIG. When the opening 41 correctly returns to the starting position as shown in FIG. 3, it stops there and then rotates in the opposite direction as shown in FIG. Rotation operation is controlled to repeat the operation of changing the direction of rotation in the forward direction from that point and returning to the starting position again,
Further, when the stop is performed by the operation of the stop switch sw, the stop is performed after returning to the start position even during the forward or reverse rotation.

From this, when the shutter drum 4 is stopped, it is supposed that no kernel remains in the inner cavity of the shutter drum 4, but actually, the remaining kernel is generated.

After studying this phenomenon, when the shutter drum 4 rotates to the starting position and stops at that position, the shutter drum 4
As shown by the dashed line in FIG. 3 (a), there is a grain G that remains without being caught and falls,
This grain G is taken into the lumen of the shutter drum 4 by rotation of the shutter drum 4 in the reverse direction from the starting position,
It has been found that this is caused by the fact that when it is rotated by 60 degrees, it is again caught on the edge of the opening 41 and remains.

The grains remaining on the edge of the opening 41 of the shutter drum 4 in this manner, when the drive of the shutter drum 4 is rotated 360 degrees from the starting position and returned to the starting position, It is rotated 360 degrees in the same direction without rotating in the reverse direction, and when it rotates 720 degrees in total, it switches to reverse rotation, and when that rotation reaches 720 degrees, it switches to normal rotation so that it switches to normal rotation. If it is controlled to rotate two rotations at a time, it is possible to cleanly drop from the opening 41, and the rotation at two rotations does not need to be performed in the whole process of the grain discharging work. It has been found that this can be done only when the line is over and the stop switch is operated to stop.

In view of this, the present invention proposes the above-described means.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The means of the present invention may be configured in the same manner as the optional conventional circulating grain dryer with respect to the configuration of the main body of the circulating grain dryer itself.

The shutter drum, which is mounted in the body of the drying unit and is rotatably supported at the lower end of the grain flow passage of the drying unit, also has its own shape and structure and control of its driving at the end of the discharge stroke. When the rotation is stopped by the operation of the stop switch, the opening does not stop immediately, but continues to rotate to the start position where the opening correctly faces downward or upward, and stops when returning to the start position.
It may be configured in the same manner as the conventional means.
When the stop switch is activated, it is controlled not to stop even if it rotates from the state position at that time to the start position, but to further rotate 360 degrees in the same direction and stop when returning to the second start position. Configure means.

In this case, the drive of the shutter drum is controlled so that it always rotates in the same direction by 720 degrees, that is, by two rotations, and when the stop switch is operated to end the discharge stroke, the shutter drum is automatically driven. Alternatively, the motor may be rotated twice in the same direction and stopped when returning to the second starting position.

[0020]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 4 is an overall perspective view of a circulation type grain dryer A for implementing the means of the present invention, wherein 1 is a fuselage, 2 is a hot air generator installed on the front side of the fuselage 1, and 5 is a hot air generator. A lower conveyor for discharging grains provided at the bottom of the machine body, 6 is an elevator that stands on the front side of the machine body 1 by connecting the bottom part to the end side of the lower conveyor 5 in the conveying direction, and 61 is the top of the elevator 6 An upper conveyor 62 for grain insertion, which is mounted on the top of the machine body 1 by communicating the start end side with the discharge cylinder 60 mounted on the discharge cylinder 60, is mounted on the discharge cylinder 60 so as to be switchable with the upper conveyor 61. The take-out gutter, 7 is a control panel mounted on the front side of the body 1, and 8 is an exhaust fan, which are configured in the same manner as those of the conventional means.

The body 1 has an upper conveyor 6 on the upper half side.
A storage unit a for storing the grains to be fed by 1 is provided;
On the lower half side, as in the conventional means shown in FIG. 1, a drying unit b in which an air guide path 30 for guiding hot air, a grain flow path 31, and an exhaust path 32 are partitioned by a permeable partition and arranged in parallel. The air guide path 30 communicates with the hot air generator 2 on the front of the body 1, the exhaust air path 32 communicates with the exhaust fan 8 on the rear of the machine 1, and the grain flow down path 31. At the lower end of 31, a shutter drum 4 is provided.

As shown in FIG. 5, the shutter drum 4 has a split opening 4 along the axial direction on the peripheral wall of the cylindrical body 40.
1 is formed by providing a phase difference of 180 degrees in the circumferential direction on the first half side and the second half side, respectively, and opening the rotation axis thereof by a motor m mounted on the rear side of the body 1. Driven through the speed reduction mechanism g to rotate the shutter drum 4, whereby the grains received in the shutter drum 4 from the opening 41 when the opening 41 faces the grain flow-down paths 31, are formed by the opening 41. By dropping when it is located below, it is a form of feeding out in a prescribed amount,
The motor m for driving the shutter drum 4 is controlled by control means provided on a control panel 7 mounted on the front of the body 1. Further, in this example, the starting position at which the rotation of the shutter drum 4 is stopped is set to a state where the opening 41 opened in the first half is correctly directed downward.

Then, as shown in FIG. 6A, the above-described control is performed by rotating the opening 41 by, for example, 360 degrees counterclockwise from the start position where the opening 41 is correctly directed downward, as shown in FIG. When returning to the starting position as shown in FIG. 6 (F), (F) and (G), the robot continues to rotate 360 degrees instead of turning left, thereby returning to the starting position again as shown in FIG. 6 (G). Control to stop once, rotate to the right in the opposite direction from there, rotate twice, come to the second starting position, stop once, rotate in the opposite direction, repeat this, and When the stop switch sw is actuated to stop the motor, if the switch sw is turned on, the start position is just occupied, and if the start position is occupied 720 degrees, the rotation is stopped 720 degrees from the start position. And start position slightly When the switch is turned on at a position beyond the predetermined position, the angle is reduced by subtracting the angle up to that position from 720 degrees, and the control is performed so as to stop when the second starting position comes.

In this control, in a normal state, the rotation direction of the shutter drum 4 is switched by a rotation of 360 degrees, and only two rotations in the same direction are performed when the shutter switch 4 is stopped by the operation of the stop switch sw. May be performed.

As described above, if the operation of the shutter drum 4 is controlled, when the shutter drum 4 is stopped at the end of the grain discharging operation, as shown in FIG. When G is present, the shutter drum 4 rotates twice in the same direction from this state and stops. Therefore, as shown in FIG. When there is a grain G caught on the edge of the opening 41 when returning to FIG.
As shown in FIG. 6E, the shutter drum 4 further rotates in the same direction, so that the shutter drum 4 drops from the opening 41. As shown in FIG. When returning to the starting position and stopping, there is no grain G left in its lumen.

On the other hand, on the second half side of the shutter drum 4 in which the openings 41 are opened with a phase difference of 180 degrees in the circumferential direction, the same grain discharging operation is performed in a state shifted by 180 degrees.

[0028]

As described above, the means of the present invention is the same as that of the circulation type grain dryer A, except that the grain downflow path 31 of the drying section b is used.
When stopping the operation of the shutter drum 4 that is pivotally supported facing the lower end of the shutter 31, the shutter drum 4 makes two rotations in the same direction and stops. Therefore, the shutter drum 4 is opened when the rotation of the shutter drum 4 returns to the starting position. Even if the kernel G is hooked and remains on the edge of 41, the remaining kernel G falls from the opening 41 by the second rotation operation of the shutter drum 4 that rotates continuously in the same direction. Thus, when the shutter drum 4 is stopped after the operation of discharging the grains is finished, no grains remain in the drum.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional front view of a conventional circulation type grain dryer with a part omitted.

FIG. 2 is a vertical sectional side view of the grain dryer.

FIG. 3 is an explanatory diagram of a phenomenon in which residual kernels are generated at the end of a discharge process of a shutter drum of the kernel dryer.

FIG. 4 is an overall perspective view of a circulation type grain dryer for implementing the means of the present invention.

FIG. 5 is a perspective view of a shutter drum of the grain dryer.

FIG. 6 is an explanatory diagram of an operation at the time of a final stop operation of the discharging process of the shutter drum.

[Explanation of symbols]

A: grain dryer, G: grain, a: storage unit, b: drying unit,
c: embedment section, g: speed reducer, m: motor, sw: stop switch, 1: body, 2: hot air generator, 30: air guide path, 31: grain flow down path, 32: exhaust air path, 4 ... Shutter drum, 40 ... Cylinder, 41 ... Opening, 5 ... Lower conveyor, 6 ... Elevator, 60 ... Ejection cylinder, 61 ... Upper conveyor, 62 ... Exhaust gutter, 7 ... Control panel, 8 ... Air blower.

Claims (2)

[Claims] 1. A crack-like opening 41 is formed in the peripheral wall of a hollow cylindrical body 40 along the axial direction so that a grain flow path 3 of a drying part b is formed.
When the rotation of the shutter drum 4 is stopped by the stop switch sw after the completion of the grain discharge process, the shutter drum 4 is rotated two times in the same direction, and is opened. An apparatus for removing remaining kernels from a shutter drum in a circulation type grain dryer in which a control is made such that the cylinder 41 is correctly stopped at a start position facing downward or upward. 2. A crack-like opening 41 is formed in the peripheral wall of the hollow cylindrical body 40 along the axial direction, so that the grain flow passage 3 of the drying part b is formed.
The shutter drum 4 that is driven and rotated by being mounted on a position facing the lower end of 1.31 is controlled so as to stop the rotation at the start position where the opening 41 is correctly directed downward or upward, and the rotation direction is changed by two rotations in the forward and reverse directions An apparatus for removing residual grains from a shutter drum in a circulation type grain dryer, wherein the apparatus is driven so as to be switched and rotated, and is controlled so as to make two rotations in the same direction and stop when a stop switch is activated.